board/freescale/mpc8349emds/mpc8349emds.c - platform/external/u-boot - Gitiles

 // SPDX-License-Identifier: GPL-2.0+
 /*
  * (C) Copyright 2006
  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  */

 #include <common.h>
 #include <fdt_support.h>
 #include <ioports.h>
 #include <mpc83xx.h>
 #include <asm/mpc8349_pci.h>
 #include <i2c.h>
 #include <spi.h>
 #include <miiphy.h>
 #ifdef CONFIG_SYS_FSL_DDR2
 #include <fsl_ddr_sdram.h>
 #else
 #include <spd_sdram.h>
 #endif

 #if defined(CONFIG_OF_LIBFDT)
 #include <linux/libfdt.h>
 #endif

 DECLARE_GLOBAL_DATA_PTR;

 int fixed_sdram(void);
 void sdram_init(void);

 #if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83xx)
 void ddr_enable_ecc(unsigned int dram_size);
 #endif

 int board_early_init_f (void)
 {
 	volatile u8* bcsr = (volatile u8*)CONFIG_SYS_BCSR;

 	/* Enable flash write */
 	bcsr[1] &= ~0x01;

 #ifdef CONFIG_SYS_USE_MPC834XSYS_USB_PHY
 	/* Use USB PHY on SYS board */
 	bcsr[5] |= 0x02;
 #endif

 	return 0;
 }

 #define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)

 int dram_init(void)
 {
 	volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
 	phys_size_t msize = 0;

 	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
 		return -ENXIO;

 	/* DDR SDRAM - Main SODIMM */
 	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & LAWBAR_BAR;
 #if defined(CONFIG_SPD_EEPROM)
 #ifndef CONFIG_SYS_FSL_DDR2
 	msize = spd_sdram() * 1024 * 1024;
 #if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
 	ddr_enable_ecc(msize);
 #endif
 #else
 	msize = fsl_ddr_sdram();
 #endif
 #else
 	msize = fixed_sdram() * 1024 * 1024;
 #endif
 	/*
 	 * Initialize SDRAM if it is on local bus.
 	 */
 	sdram_init();

 	/* set total bus SDRAM size(bytes)  -- DDR */
 	gd->ram_size = msize;

 	return 0;
 }

 #if !defined(CONFIG_SPD_EEPROM)
 /*************************************************************************
  *  fixed sdram init -- doesn't use serial presence detect.
  ************************************************************************/
 int fixed_sdram(void)
 {
 	volatile immap_t *im = (immap_t *)CONFIG_SYS_IMMR;
 	u32 msize = CONFIG_SYS_DDR_SIZE;
 	u32 ddr_size = msize << 20;	/* DDR size in bytes */
 	u32 ddr_size_log2 = __ilog2(ddr_size);

 	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000;
 	im->sysconf.ddrlaw[0].ar = LAWAR_EN | ((ddr_size_log2 - 1) & LAWAR_SIZE);

 #if (CONFIG_SYS_DDR_SIZE != 256)
 #warning Currenly any ddr size other than 256 is not supported
 #endif
 #ifdef CONFIG_DDR_II
 	im->ddr.csbnds[2].csbnds = CONFIG_SYS_DDR_CS2_BNDS;
 	im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;
 	im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
 	im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
 	im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
 	im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
 	im->ddr.sdram_cfg = CONFIG_SYS_DDR_SDRAM_CFG;
 	im->ddr.sdram_cfg2 = CONFIG_SYS_DDR_SDRAM_CFG2;
 	im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
 	im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE2;
 	im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
 	im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CNTL;
 #else

 #if ((CONFIG_SYS_SDRAM_BASE & 0x00FFFFFF) != 0)
 #warning Chip select bounds is only configurable in 16MB increments
 #endif
 	im->ddr.csbnds[2].csbnds =
 		((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) |
 		(((CONFIG_SYS_SDRAM_BASE + ddr_size - 1) >>
 				CSBNDS_EA_SHIFT) & CSBNDS_EA);
 	im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;

 	/* currently we use only one CS, so disable the other banks */
 	im->ddr.cs_config[0] = 0;
 	im->ddr.cs_config[1] = 0;
 	im->ddr.cs_config[3] = 0;

 	im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
 	im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;

 	im->ddr.sdram_cfg =
 		SDRAM_CFG_SREN
 #if defined(CONFIG_DDR_2T_TIMING)
 		| SDRAM_CFG_2T_EN
 #endif
 		| 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT;
 #if defined (CONFIG_DDR_32BIT)
 	/* for 32-bit mode burst length is 8 */
 	im->ddr.sdram_cfg |= (SDRAM_CFG_32_BE | SDRAM_CFG_8_BE);
 #endif
 	im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;

 	im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
 #endif
 	udelay(200);

 	/* enable DDR controller */
 	im->ddr.sdram_cfg |= SDRAM_CFG_MEM_EN;
 	return msize;
 }
 #endif/*!CONFIG_SYS_SPD_EEPROM*/


 int checkboard (void)
 {
 	/*
 	 * Warning: do not read the BCSR registers here
 	 *
 	 * There is a timing bug in the 8349E and 8349EA BCSR code
 	 * version 1.2 (read from BCSR 11) that will cause the CFI
 	 * flash initialization code to overwrite BCSR 0, disabling
 	 * the serial ports and gigabit ethernet
 	 */

 	puts("Board: Freescale MPC8349EMDS\n");
 	return 0;
 }

 /*
  * if MPC8349EMDS is soldered with SDRAM
  */
 #if defined(CONFIG_SYS_BR2_PRELIM)  \
 	&& defined(CONFIG_SYS_OR2_PRELIM) \
 	&& defined(CONFIG_SYS_LBLAWBAR2_PRELIM) \
 	&& defined(CONFIG_SYS_LBLAWAR2_PRELIM)
 /*
  * Initialize SDRAM memory on the Local Bus.
  */

 void sdram_init(void)
 {
 	volatile immap_t *immap = (immap_t *)CONFIG_SYS_IMMR;
 	volatile fsl_lbc_t *lbc = &immap->im_lbc;
 	uint *sdram_addr = (uint *)CONFIG_SYS_LBC_SDRAM_BASE;
 	const u32 lsdmr_common = LSDMR_RFEN | LSDMR_BSMA1516 | LSDMR_RFCR8 |
 				 LSDMR_PRETOACT6 | LSDMR_ACTTORW3 | LSDMR_BL8 |
 				 LSDMR_WRC3 | LSDMR_CL3;
 	/*
 	 * Setup SDRAM Base and Option Registers, already done in cpu_init.c
 	 */

 	/* setup mtrpt, lsrt and lbcr for LB bus */
 	lbc->lbcr = 0x00000000;
 	/* LB refresh timer prescal, 266MHz/32 */
 	lbc->mrtpr = 0x20000000;
 	/* LB sdram refresh timer, about 6us */
 	lbc->lsrt = 0x32000000;
 	asm("sync");

 	/*
 	 * Configure the SDRAM controller Machine Mode Register.
 	 */

 	/* 0x40636733; normal operation */
 	lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;

 	/* 0x68636733; precharge all the banks */
 	lbc->lsdmr = lsdmr_common | LSDMR_OP_PCHALL;
 	asm("sync");
 	*sdram_addr = 0xff;
 	udelay(100);

 	/* 0x48636733; auto refresh */
 	lbc->lsdmr = lsdmr_common | LSDMR_OP_ARFRSH;
 	asm("sync");
 	/*1 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*2 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*3 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*4 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*5 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*6 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*7 times*/
 	*sdram_addr = 0xff;
 	udelay(100);
 	/*8 times*/
 	*sdram_addr = 0xff;
 	udelay(100);

 	/* 0x58636733; mode register write operation */
 	lbc->lsdmr = lsdmr_common | LSDMR_OP_MRW;
 	asm("sync");
 	*sdram_addr = 0xff;
 	udelay(100);

 	/* 0x40636733; normal operation */
 	lbc->lsdmr = lsdmr_common | LSDMR_OP_NORMAL;
 	asm("sync");
 	*sdram_addr = 0xff;
 	udelay(100);
 }
 #else
 void sdram_init(void)
 {
 }
 #endif

 /*
  * The following are used to control the SPI chip selects for the SPI command.
  */
 #ifdef CONFIG_MPC8XXX_SPI

 #define SPI_CS_MASK	0x80000000

 int spi_cs_is_valid(unsigned int bus, unsigned int cs)
 {
 	return bus == 0 && cs == 0;
 }

 void spi_cs_activate(struct spi_slave *slave)
 {
 	volatile gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0];

 	iopd->dat &= ~SPI_CS_MASK;
 }

 void spi_cs_deactivate(struct spi_slave *slave)
 {
 	volatile gpio83xx_t *iopd = &((immap_t *)CONFIG_SYS_IMMR)->gpio[0];

 	iopd->dat |=  SPI_CS_MASK;
 }
 #endif

 #if defined(CONFIG_OF_BOARD_SETUP)
 int ft_board_setup(void *blob, bd_t *bd)
 {
 	ft_cpu_setup(blob, bd);
 #ifdef CONFIG_PCI
 	ft_pci_setup(blob, bd);
 #endif

 	return 0;
 }
 #endif
	// SPDX-License-Identifier: GPL-2.0+
	/*
	* (C) Copyright 2006
	* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
	*/

	#include <common.h>
	#include <fdt_support.h>
	#include <ioports.h>
	#include <mpc83xx.h>
	#include <asm/mpc8349_pci.h>
	#include <i2c.h>
	#include <spi.h>
	#include <miiphy.h>
	#ifdef CONFIG_SYS_FSL_DDR2
	#include <fsl_ddr_sdram.h>
	#else
	#include <spd_sdram.h>
	#endif

	#if defined(CONFIG_OF_LIBFDT)
	#include <linux/libfdt.h>
	#endif

	DECLARE_GLOBAL_DATA_PTR;

	int fixed_sdram(void);
	void sdram_init(void);

	#if defined(CONFIG_DDR_ECC) && defined(CONFIG_MPC83xx)
	void ddr_enable_ecc(unsigned int dram_size);
	#endif

	int board_early_init_f (void)
	{
	volatile u8* bcsr = (volatile u8*)CONFIG_SYS_BCSR;

	/* Enable flash write */
	bcsr[1] &= ~0x01;

	#ifdef CONFIG_SYS_USE_MPC834XSYS_USB_PHY
	/* Use USB PHY on SYS board */
	bcsr[5] \|= 0x02;
	#endif

	return 0;
	}

	#define ns2clk(ns) (ns / (1000000000 / CONFIG_8349_CLKIN) + 1)

	int dram_init(void)
	{
	volatile immap_t im = (immap_t )CONFIG_SYS_IMMR;
	phys_size_t msize = 0;

	if ((im->sysconf.immrbar & IMMRBAR_BASE_ADDR) != (u32)im)
	return -ENXIO;

	/* DDR SDRAM - Main SODIMM */
	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & LAWBAR_BAR;
	#if defined(CONFIG_SPD_EEPROM)
	#ifndef CONFIG_SYS_FSL_DDR2
	msize = spd_sdram() * 1024 * 1024;
	#if defined(CONFIG_DDR_ECC) && !defined(CONFIG_ECC_INIT_VIA_DDRCONTROLLER)
	ddr_enable_ecc(msize);
	#endif
	#else
	msize = fsl_ddr_sdram();
	#endif
	#else
	msize = fixed_sdram() * 1024 * 1024;
	#endif
	/*
	* Initialize SDRAM if it is on local bus.
	*/
	sdram_init();

	/* set total bus SDRAM size(bytes) -- DDR */
	gd->ram_size = msize;

	return 0;
	}

	#if !defined(CONFIG_SPD_EEPROM)
	/*************************************************************************
	* fixed sdram init -- doesn't use serial presence detect.
	************************************************************************/
	int fixed_sdram(void)
	{
	volatile immap_t im = (immap_t )CONFIG_SYS_IMMR;
	u32 msize = CONFIG_SYS_DDR_SIZE;
	u32 ddr_size = msize << 20; /* DDR size in bytes */
	u32 ddr_size_log2 = __ilog2(ddr_size);

	im->sysconf.ddrlaw[0].bar = CONFIG_SYS_SDRAM_BASE & 0xfffff000;
	im->sysconf.ddrlaw[0].ar = LAWAR_EN \| ((ddr_size_log2 - 1) & LAWAR_SIZE);

	#if (CONFIG_SYS_DDR_SIZE != 256)
	#warning Currenly any ddr size other than 256 is not supported
	#endif
	#ifdef CONFIG_DDR_II
	im->ddr.csbnds[2].csbnds = CONFIG_SYS_DDR_CS2_BNDS;
	im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;
	im->ddr.timing_cfg_0 = CONFIG_SYS_DDR_TIMING_0;
	im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
	im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;
	im->ddr.timing_cfg_3 = CONFIG_SYS_DDR_TIMING_3;
	im->ddr.sdram_cfg = CONFIG_SYS_DDR_SDRAM_CFG;
	im->ddr.sdram_cfg2 = CONFIG_SYS_DDR_SDRAM_CFG2;
	im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;
	im->ddr.sdram_mode2 = CONFIG_SYS_DDR_MODE2;
	im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
	im->ddr.sdram_clk_cntl = CONFIG_SYS_DDR_CLK_CNTL;
	#else

	#if ((CONFIG_SYS_SDRAM_BASE & 0x00FFFFFF) != 0)
	#warning Chip select bounds is only configurable in 16MB increments
	#endif
	im->ddr.csbnds[2].csbnds =
	((CONFIG_SYS_SDRAM_BASE >> CSBNDS_SA_SHIFT) & CSBNDS_SA) \|
	(((CONFIG_SYS_SDRAM_BASE + ddr_size - 1) >>
	CSBNDS_EA_SHIFT) & CSBNDS_EA);
	im->ddr.cs_config[2] = CONFIG_SYS_DDR_CS2_CONFIG;

	/* currently we use only one CS, so disable the other banks */
	im->ddr.cs_config[0] = 0;
	im->ddr.cs_config[1] = 0;
	im->ddr.cs_config[3] = 0;

	im->ddr.timing_cfg_1 = CONFIG_SYS_DDR_TIMING_1;
	im->ddr.timing_cfg_2 = CONFIG_SYS_DDR_TIMING_2;

	im->ddr.sdram_cfg =
	SDRAM_CFG_SREN
	#if defined(CONFIG_DDR_2T_TIMING)
	\| SDRAM_CFG_2T_EN
	#endif
	\| 2 << SDRAM_CFG_SDRAM_TYPE_SHIFT;
	#if defined (CONFIG_DDR_32BIT)
	/* for 32-bit mode burst length is 8 */
	im->ddr.sdram_cfg \|= (SDRAM_CFG_32_BE \| SDRAM_CFG_8_BE);
	#endif
	im->ddr.sdram_mode = CONFIG_SYS_DDR_MODE;

	im->ddr.sdram_interval = CONFIG_SYS_DDR_INTERVAL;
	#endif
	udelay(200);

	/* enable DDR controller */
	im->ddr.sdram_cfg \|= SDRAM_CFG_MEM_EN;
	return msize;
	}
	#endif/!CONFIG_SYS_SPD_EEPROM/


	int checkboard (void)
	{
	/*
	* Warning: do not read the BCSR registers here
	*
	* There is a timing bug in the 8349E and 8349EA BCSR code
	* version 1.2 (read from BCSR 11) that will cause the CFI
	* flash initialization code to overwrite BCSR 0, disabling
	* the serial ports and gigabit ethernet
	*/

	puts("Board: Freescale MPC8349EMDS\n");
	return 0;
	}

	/*
	* if MPC8349EMDS is soldered with SDRAM
	*/
	#if defined(CONFIG_SYS_BR2_PRELIM) \
	&& defined(CONFIG_SYS_OR2_PRELIM) \
	&& defined(CONFIG_SYS_LBLAWBAR2_PRELIM) \
	&& defined(CONFIG_SYS_LBLAWAR2_PRELIM)
	/*
	* Initialize SDRAM memory on the Local Bus.
	*/

	void sdram_init(void)
	{
	volatile immap_t immap = (immap_t )CONFIG_SYS_IMMR;
	volatile fsl_lbc_t *lbc = &immap->im_lbc;
	uint sdram_addr = (uint )CONFIG_SYS_LBC_SDRAM_BASE;
	const u32 lsdmr_common = LSDMR_RFEN \| LSDMR_BSMA1516 \| LSDMR_RFCR8 \|
	LSDMR_PRETOACT6 \| LSDMR_ACTTORW3 \| LSDMR_BL8 \|
	LSDMR_WRC3 \| LSDMR_CL3;
	/*
	* Setup SDRAM Base and Option Registers, already done in cpu_init.c
	*/

	/* setup mtrpt, lsrt and lbcr for LB bus */
	lbc->lbcr = 0x00000000;
	/* LB refresh timer prescal, 266MHz/32 */
	lbc->mrtpr = 0x20000000;
	/* LB sdram refresh timer, about 6us */
	lbc->lsrt = 0x32000000;
	asm("sync");

	/*
	* Configure the SDRAM controller Machine Mode Register.
	*/

	/* 0x40636733; normal operation */
	lbc->lsdmr = lsdmr_common \| LSDMR_OP_NORMAL;

	/* 0x68636733; precharge all the banks */
	lbc->lsdmr = lsdmr_common \| LSDMR_OP_PCHALL;
	asm("sync");
	*sdram_addr = 0xff;
	udelay(100);

	/* 0x48636733; auto refresh */
	lbc->lsdmr = lsdmr_common \| LSDMR_OP_ARFRSH;
	asm("sync");
	/1 times/
	*sdram_addr = 0xff;
	udelay(100);
	/2 times/
	*sdram_addr = 0xff;
	udelay(100);
	/3 times/
	*sdram_addr = 0xff;
	udelay(100);
	/4 times/
	*sdram_addr = 0xff;
	udelay(100);
	/5 times/
	*sdram_addr = 0xff;
	udelay(100);
	/6 times/
	*sdram_addr = 0xff;
	udelay(100);
	/7 times/
	*sdram_addr = 0xff;
	udelay(100);
	/8 times/
	*sdram_addr = 0xff;
	udelay(100);

	/* 0x58636733; mode register write operation */
	lbc->lsdmr = lsdmr_common \| LSDMR_OP_MRW;
	asm("sync");
	*sdram_addr = 0xff;
	udelay(100);

	/* 0x40636733; normal operation */
	lbc->lsdmr = lsdmr_common \| LSDMR_OP_NORMAL;
	asm("sync");
	*sdram_addr = 0xff;
	udelay(100);
	}
	#else
	void sdram_init(void)
	{
	}
	#endif

	/*
	* The following are used to control the SPI chip selects for the SPI command.
	*/
	#ifdef CONFIG_MPC8XXX_SPI

	#define SPI_CS_MASK 0x80000000

	int spi_cs_is_valid(unsigned int bus, unsigned int cs)
	{
	return bus == 0 && cs == 0;
	}

	void spi_cs_activate(struct spi_slave *slave)
	{
	volatile gpio83xx_t iopd = &((immap_t )CONFIG_SYS_IMMR)->gpio[0];

	iopd->dat &= ~SPI_CS_MASK;
	}

	void spi_cs_deactivate(struct spi_slave *slave)
	{
	volatile gpio83xx_t iopd = &((immap_t )CONFIG_SYS_IMMR)->gpio[0];

	iopd->dat \|= SPI_CS_MASK;
	}
	#endif

	#if defined(CONFIG_OF_BOARD_SETUP)
	int ft_board_setup(void blob, bd_t bd)
	{
	ft_cpu_setup(blob, bd);
	#ifdef CONFIG_PCI
	ft_pci_setup(blob, bd);
	#endif

	return 0;
	}
	#endif